./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:20:14,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:20:14,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:20:14,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:20:14,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:20:14,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:20:14,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:20:14,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:20:14,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:20:14,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:20:14,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:20:14,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:20:14,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:20:14,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:20:14,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:20:14,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:20:14,495 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:14,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:14,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:20:14,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:20:14,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:20:14,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:20:14,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:14,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:20:14,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:20:14,497 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:20:14,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:20:14,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:20:14,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:20:14,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:20:14,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:20:14,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:20:14,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:20:14,498 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5af223e668aa8b86ae636f9439d9ac4f153fc620faa9da4461ac4ba5e2c60ee8 [2024-11-23 23:20:14,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:20:14,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:20:14,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:20:14,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:20:14,851 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:20:14,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-23 23:20:17,833 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/data/39325bce6/e7b3a70e5cc247a1b70c2ba0f2b5c98d/FLAG643a7c632 [2024-11-23 23:20:18,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:20:18,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-23 23:20:18,586 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/data/39325bce6/e7b3a70e5cc247a1b70c2ba0f2b5c98d/FLAG643a7c632 [2024-11-23 23:20:18,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/data/39325bce6/e7b3a70e5cc247a1b70c2ba0f2b5c98d [2024-11-23 23:20:18,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:20:18,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:20:18,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:18,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:20:18,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:20:18,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:18" (1/1) ... [2024-11-23 23:20:18,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc816bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:18, skipping insertion in model container [2024-11-23 23:20:18,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:20:18" (1/1) ... [2024-11-23 23:20:19,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:20:19,362 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-11-23 23:20:19,403 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-11-23 23:20:20,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:20,325 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:20:20,365 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[6450,6463] [2024-11-23 23:20:20,371 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c[8325,8338] [2024-11-23 23:20:20,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:20:20,955 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:20:20,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20 WrapperNode [2024-11-23 23:20:20,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:20:20,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:20:20,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:20:20,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:20:20,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,538 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4981 [2024-11-23 23:20:21,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:20:21,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:20:21,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:20:21,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:20:21,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,906 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:20:21,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:21,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,085 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:20:22,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:20:22,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:20:22,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:20:22,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (1/1) ... [2024-11-23 23:20:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:20:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:22,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:20:22,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:20:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:20:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:20:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:20:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:20:22,595 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:20:22,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:20:28,750 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-23 23:20:28,751 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:20:28,792 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:20:28,793 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:20:28,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:28 BoogieIcfgContainer [2024-11-23 23:20:28,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:20:28,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:20:28,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:20:28,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:20:28,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:20:18" (1/3) ... [2024-11-23 23:20:28,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16269565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:28, skipping insertion in model container [2024-11-23 23:20:28,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:20:20" (2/3) ... [2024-11-23 23:20:28,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16269565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:20:28, skipping insertion in model container [2024-11-23 23:20:28,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:20:28" (3/3) ... [2024-11-23 23:20:28,806 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-11-23 23:20:28,823 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:20:28,826 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label00.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:20:28,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:20:28,945 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2804d025, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:20:28,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:20:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 23:20:28,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:28,962 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:28,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:28,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1102834421, now seen corresponding path program 1 times [2024-11-23 23:20:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:28,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120313687] [2024-11-23 23:20:28,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:28,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:29,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120313687] [2024-11-23 23:20:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120313687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:29,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:29,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:20:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145308305] [2024-11-23 23:20:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:29,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:29,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:29,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:29,344 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:34,264 INFO L93 Difference]: Finished difference Result 2479 states and 4780 transitions. [2024-11-23 23:20:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:34,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-23 23:20:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:34,284 INFO L225 Difference]: With dead ends: 2479 [2024-11-23 23:20:34,284 INFO L226 Difference]: Without dead ends: 1559 [2024-11-23 23:20:34,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:34,292 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 907 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:34,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 571 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 23:20:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-23 23:20:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-23 23:20:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.640333975594091) internal successors, (2554), 1558 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2554 transitions. [2024-11-23 23:20:34,434 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2554 transitions. Word has length 16 [2024-11-23 23:20:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:34,434 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2554 transitions. [2024-11-23 23:20:34,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2554 transitions. [2024-11-23 23:20:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 23:20:34,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:34,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:34,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:20:34,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:34,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-23 23:20:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768544666] [2024-11-23 23:20:34,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768544666] [2024-11-23 23:20:34,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768544666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:34,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289394371] [2024-11-23 23:20:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:34,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:34,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:34,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:34,747 INFO L87 Difference]: Start difference. First operand 1559 states and 2554 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:34,839 INFO L93 Difference]: Finished difference Result 1595 states and 2608 transitions. [2024-11-23 23:20:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-23 23:20:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:34,848 INFO L225 Difference]: With dead ends: 1595 [2024-11-23 23:20:34,848 INFO L226 Difference]: Without dead ends: 1559 [2024-11-23 23:20:34,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:34,853 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:34,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-23 23:20:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-23 23:20:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1557 states have (on average 1.630057803468208) internal successors, (2538), 1558 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2538 transitions. [2024-11-23 23:20:34,912 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2538 transitions. Word has length 20 [2024-11-23 23:20:34,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:34,912 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2538 transitions. [2024-11-23 23:20:34,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2538 transitions. [2024-11-23 23:20:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-23 23:20:34,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:34,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:34,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:20:34,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:34,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-23 23:20:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:34,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651183034] [2024-11-23 23:20:34,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:35,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:35,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651183034] [2024-11-23 23:20:35,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651183034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:35,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:35,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486901224] [2024-11-23 23:20:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:35,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:35,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:35,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:35,154 INFO L87 Difference]: Start difference. First operand 1559 states and 2538 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:35,301 INFO L93 Difference]: Finished difference Result 1751 states and 2838 transitions. [2024-11-23 23:20:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:20:35,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-23 23:20:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:35,310 INFO L225 Difference]: With dead ends: 1751 [2024-11-23 23:20:35,310 INFO L226 Difference]: Without dead ends: 1719 [2024-11-23 23:20:35,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:35,313 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:35,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:20:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-23 23:20:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1589. [2024-11-23 23:20:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6288594833018273) internal successors, (2585), 1588 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2585 transitions. [2024-11-23 23:20:35,362 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2585 transitions. Word has length 35 [2024-11-23 23:20:35,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:35,362 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2585 transitions. [2024-11-23 23:20:35,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2585 transitions. [2024-11-23 23:20:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 23:20:35,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:35,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:35,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:20:35,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:35,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-23 23:20:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074121126] [2024-11-23 23:20:35,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:35,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074121126] [2024-11-23 23:20:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074121126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931834264] [2024-11-23 23:20:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:35,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:35,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:35,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:35,516 INFO L87 Difference]: Start difference. First operand 1589 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:35,569 INFO L93 Difference]: Finished difference Result 1702 states and 2760 transitions. [2024-11-23 23:20:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:35,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 23:20:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:35,577 INFO L225 Difference]: With dead ends: 1702 [2024-11-23 23:20:35,577 INFO L226 Difference]: Without dead ends: 1640 [2024-11-23 23:20:35,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:35,581 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:35,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-23 23:20:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2024-11-23 23:20:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.6248470012239902) internal successors, (2655), 1635 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2655 transitions. [2024-11-23 23:20:35,651 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2655 transitions. Word has length 37 [2024-11-23 23:20:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:35,651 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2655 transitions. [2024-11-23 23:20:35,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2655 transitions. [2024-11-23 23:20:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 23:20:35,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:35,652 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:35,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:20:35,653 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:35,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-23 23:20:35,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:35,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584194314] [2024-11-23 23:20:35,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:35,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:36,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:36,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584194314] [2024-11-23 23:20:36,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584194314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:36,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:36,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:36,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987931187] [2024-11-23 23:20:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:36,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:36,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:36,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:36,033 INFO L87 Difference]: Start difference. First operand 1636 states and 2655 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:36,137 INFO L93 Difference]: Finished difference Result 1747 states and 2823 transitions. [2024-11-23 23:20:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 23:20:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:36,145 INFO L225 Difference]: With dead ends: 1747 [2024-11-23 23:20:36,145 INFO L226 Difference]: Without dead ends: 1638 [2024-11-23 23:20:36,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:36,148 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 4426 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:36,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 1598 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2024-11-23 23:20:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1636. [2024-11-23 23:20:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.6236230110159118) internal successors, (2653), 1635 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2653 transitions. [2024-11-23 23:20:36,194 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2653 transitions. Word has length 37 [2024-11-23 23:20:36,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:36,196 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2653 transitions. [2024-11-23 23:20:36,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2653 transitions. [2024-11-23 23:20:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:20:36,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:36,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:36,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:20:36,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-23 23:20:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069101342] [2024-11-23 23:20:36,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069101342] [2024-11-23 23:20:36,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069101342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:36,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:36,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:20:36,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905692383] [2024-11-23 23:20:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:36,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:20:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:36,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:20:36,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:36,560 INFO L87 Difference]: Start difference. First operand 1636 states and 2653 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:36,667 INFO L93 Difference]: Finished difference Result 1644 states and 2662 transitions. [2024-11-23 23:20:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:20:36,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 23:20:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:36,674 INFO L225 Difference]: With dead ends: 1644 [2024-11-23 23:20:36,675 INFO L226 Difference]: Without dead ends: 1642 [2024-11-23 23:20:36,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:36,676 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:36,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2024-11-23 23:20:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2024-11-23 23:20:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.6207317073170733) internal successors, (2658), 1641 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2658 transitions. [2024-11-23 23:20:36,721 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2658 transitions. Word has length 38 [2024-11-23 23:20:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:36,721 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2658 transitions. [2024-11-23 23:20:36,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2658 transitions. [2024-11-23 23:20:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:20:36,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:36,723 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:36,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:20:36,723 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:36,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:36,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-23 23:20:36,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:36,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167997215] [2024-11-23 23:20:36,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:36,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:36,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167997215] [2024-11-23 23:20:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167997215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:36,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669025404] [2024-11-23 23:20:36,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:36,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:36,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:36,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:36,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:36,785 INFO L87 Difference]: Start difference. First operand 1642 states and 2658 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:36,827 INFO L93 Difference]: Finished difference Result 1856 states and 2970 transitions. [2024-11-23 23:20:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-23 23:20:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:36,835 INFO L225 Difference]: With dead ends: 1856 [2024-11-23 23:20:36,835 INFO L226 Difference]: Without dead ends: 1741 [2024-11-23 23:20:36,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:36,837 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:36,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-23 23:20:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1739. [2024-11-23 23:20:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1737 states have (on average 1.6090961427748993) internal successors, (2795), 1738 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2795 transitions. [2024-11-23 23:20:36,885 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2795 transitions. Word has length 39 [2024-11-23 23:20:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:36,885 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2795 transitions. [2024-11-23 23:20:36,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2795 transitions. [2024-11-23 23:20:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:20:36,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:36,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:36,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:20:36,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:36,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-23 23:20:36,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420842783] [2024-11-23 23:20:36,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:36,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:36,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420842783] [2024-11-23 23:20:36,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420842783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:36,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:36,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:36,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736433605] [2024-11-23 23:20:36,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:36,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:36,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:36,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:36,949 INFO L87 Difference]: Start difference. First operand 1739 states and 2795 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:36,995 INFO L93 Difference]: Finished difference Result 2131 states and 3353 transitions. [2024-11-23 23:20:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-23 23:20:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:37,004 INFO L225 Difference]: With dead ends: 2131 [2024-11-23 23:20:37,004 INFO L226 Difference]: Without dead ends: 1919 [2024-11-23 23:20:37,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:37,006 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:37,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2024-11-23 23:20:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2024-11-23 23:20:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.5859007832898173) internal successors, (3037), 1916 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3037 transitions. [2024-11-23 23:20:37,068 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3037 transitions. Word has length 39 [2024-11-23 23:20:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:37,068 INFO L471 AbstractCegarLoop]: Abstraction has 1917 states and 3037 transitions. [2024-11-23 23:20:37,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3037 transitions. [2024-11-23 23:20:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 23:20:37,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:37,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:37,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:20:37,070 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:37,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-23 23:20:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383488038] [2024-11-23 23:20:37,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383488038] [2024-11-23 23:20:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383488038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154831472] [2024-11-23 23:20:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:37,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:37,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:37,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:37,148 INFO L87 Difference]: Start difference. First operand 1917 states and 3037 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:37,203 INFO L93 Difference]: Finished difference Result 2340 states and 3643 transitions. [2024-11-23 23:20:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:37,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-23 23:20:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:37,213 INFO L225 Difference]: With dead ends: 2340 [2024-11-23 23:20:37,213 INFO L226 Difference]: Without dead ends: 2105 [2024-11-23 23:20:37,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:37,216 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:37,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-23 23:20:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2024-11-23 23:20:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2101 states have (on average 1.5663969538315088) internal successors, (3291), 2102 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3291 transitions. [2024-11-23 23:20:37,288 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3291 transitions. Word has length 41 [2024-11-23 23:20:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:37,289 INFO L471 AbstractCegarLoop]: Abstraction has 2103 states and 3291 transitions. [2024-11-23 23:20:37,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3291 transitions. [2024-11-23 23:20:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 23:20:37,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:37,290 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:37,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:20:37,291 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:37,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-23 23:20:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242364921] [2024-11-23 23:20:37,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:20:37,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:37,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242364921] [2024-11-23 23:20:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242364921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:37,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:37,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537461069] [2024-11-23 23:20:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:37,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:37,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:37,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:37,522 INFO L87 Difference]: Start difference. First operand 2103 states and 3291 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:37,661 INFO L93 Difference]: Finished difference Result 3959 states and 5871 transitions. [2024-11-23 23:20:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-23 23:20:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:37,674 INFO L225 Difference]: With dead ends: 3959 [2024-11-23 23:20:37,674 INFO L226 Difference]: Without dead ends: 3385 [2024-11-23 23:20:37,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:37,676 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:37,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-11-23 23:20:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 2675. [2024-11-23 23:20:37,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2673 states have (on average 1.5260007482229705) internal successors, (4079), 2674 states have internal predecessors, (4079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4079 transitions. [2024-11-23 23:20:37,764 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4079 transitions. Word has length 54 [2024-11-23 23:20:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:37,765 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4079 transitions. [2024-11-23 23:20:37,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4079 transitions. [2024-11-23 23:20:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 23:20:37,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:37,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:37,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:20:37,766 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:37,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-23 23:20:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930542386] [2024-11-23 23:20:37,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:37,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:20:37,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930542386] [2024-11-23 23:20:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930542386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889039634] [2024-11-23 23:20:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:37,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:37,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:37,925 INFO L87 Difference]: Start difference. First operand 2675 states and 4079 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:38,065 INFO L93 Difference]: Finished difference Result 4531 states and 6659 transitions. [2024-11-23 23:20:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:38,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-23 23:20:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:38,081 INFO L225 Difference]: With dead ends: 4531 [2024-11-23 23:20:38,081 INFO L226 Difference]: Without dead ends: 3957 [2024-11-23 23:20:38,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:38,085 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3053 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:38,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 3159 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2024-11-23 23:20:38,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3535. [2024-11-23 23:20:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3533 states have (on average 1.486272289838664) internal successors, (5251), 3534 states have internal predecessors, (5251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5251 transitions. [2024-11-23 23:20:38,209 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5251 transitions. Word has length 54 [2024-11-23 23:20:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:38,209 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 5251 transitions. [2024-11-23 23:20:38,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5251 transitions. [2024-11-23 23:20:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:20:38,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:38,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:38,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:20:38,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:38,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-23 23:20:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227321925] [2024-11-23 23:20:38,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:38,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227321925] [2024-11-23 23:20:38,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227321925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:38,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:38,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822094679] [2024-11-23 23:20:38,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:38,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:38,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:38,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:38,341 INFO L87 Difference]: Start difference. First operand 3535 states and 5251 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:38,419 INFO L93 Difference]: Finished difference Result 5011 states and 7314 transitions. [2024-11-23 23:20:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 23:20:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:38,440 INFO L225 Difference]: With dead ends: 5011 [2024-11-23 23:20:38,443 INFO L226 Difference]: Without dead ends: 3005 [2024-11-23 23:20:38,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:38,446 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:38,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-23 23:20:38,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 3003. [2024-11-23 23:20:38,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3001 states have (on average 1.5071642785738086) internal successors, (4523), 3002 states have internal predecessors, (4523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4523 transitions. [2024-11-23 23:20:38,633 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4523 transitions. Word has length 56 [2024-11-23 23:20:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:38,633 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 4523 transitions. [2024-11-23 23:20:38,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:38,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4523 transitions. [2024-11-23 23:20:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:20:38,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:38,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:38,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:20:38,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:38,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-23 23:20:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852190438] [2024-11-23 23:20:38,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:20:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:38,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852190438] [2024-11-23 23:20:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852190438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062743126] [2024-11-23 23:20:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:38,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:38,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:38,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:38,987 INFO L87 Difference]: Start difference. First operand 3003 states and 4523 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:39,150 INFO L93 Difference]: Finished difference Result 4259 states and 6279 transitions. [2024-11-23 23:20:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 23:20:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:39,160 INFO L225 Difference]: With dead ends: 4259 [2024-11-23 23:20:39,161 INFO L226 Difference]: Without dead ends: 3841 [2024-11-23 23:20:39,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:39,164 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:39,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:20:39,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2024-11-23 23:20:39,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3419. [2024-11-23 23:20:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.492244659057653) internal successors, (5099), 3418 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5099 transitions. [2024-11-23 23:20:39,289 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5099 transitions. Word has length 56 [2024-11-23 23:20:39,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:39,289 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5099 transitions. [2024-11-23 23:20:39,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5099 transitions. [2024-11-23 23:20:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 23:20:39,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:39,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:39,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:20:39,292 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:39,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-23 23:20:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120482646] [2024-11-23 23:20:39,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120482646] [2024-11-23 23:20:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120482646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275633737] [2024-11-23 23:20:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:39,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:39,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:39,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:39,429 INFO L87 Difference]: Start difference. First operand 3419 states and 5099 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:39,490 INFO L93 Difference]: Finished difference Result 4359 states and 6397 transitions. [2024-11-23 23:20:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-23 23:20:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:39,499 INFO L225 Difference]: With dead ends: 4359 [2024-11-23 23:20:39,500 INFO L226 Difference]: Without dead ends: 2485 [2024-11-23 23:20:39,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:39,503 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:39,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2024-11-23 23:20:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2024-11-23 23:20:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5255945183393793) internal successors, (3785), 2482 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3785 transitions. [2024-11-23 23:20:39,572 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3785 transitions. Word has length 57 [2024-11-23 23:20:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:39,572 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3785 transitions. [2024-11-23 23:20:39,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3785 transitions. [2024-11-23 23:20:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 23:20:39,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:39,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:39,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:20:39,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:39,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-23 23:20:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461498519] [2024-11-23 23:20:39,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:39,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461498519] [2024-11-23 23:20:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461498519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:20:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821882115] [2024-11-23 23:20:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:39,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:20:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:39,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:20:39,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:39,687 INFO L87 Difference]: Start difference. First operand 2483 states and 3785 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:39,731 INFO L93 Difference]: Finished difference Result 2955 states and 4426 transitions. [2024-11-23 23:20:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:39,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 23:20:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:39,736 INFO L225 Difference]: With dead ends: 2955 [2024-11-23 23:20:39,736 INFO L226 Difference]: Without dead ends: 2017 [2024-11-23 23:20:39,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:39,738 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:39,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2024-11-23 23:20:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2015. [2024-11-23 23:20:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.5583705911574763) internal successors, (3137), 2014 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3137 transitions. [2024-11-23 23:20:39,789 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3137 transitions. Word has length 59 [2024-11-23 23:20:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:39,790 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3137 transitions. [2024-11-23 23:20:39,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3137 transitions. [2024-11-23 23:20:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 23:20:39,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:39,791 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:39,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:20:39,791 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:39,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-23 23:20:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:39,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126969586] [2024-11-23 23:20:39,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:42,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126969586] [2024-11-23 23:20:42,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126969586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:42,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465694536] [2024-11-23 23:20:42,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:42,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:42,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:20:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:42,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:20:43,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:20:43,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:20:43,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465694536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:43,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:43,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-23 23:20:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404484163] [2024-11-23 23:20:43,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:43,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:20:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:43,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:20:43,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:20:43,503 INFO L87 Difference]: Start difference. First operand 2015 states and 3137 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:47,514 INFO L93 Difference]: Finished difference Result 4284 states and 6111 transitions. [2024-11-23 23:20:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-23 23:20:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-23 23:20:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:47,524 INFO L225 Difference]: With dead ends: 4284 [2024-11-23 23:20:47,524 INFO L226 Difference]: Without dead ends: 3814 [2024-11-23 23:20:47,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=755, Invalid=3027, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:20:47,530 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 15563 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15563 SdHoareTripleChecker+Valid, 7759 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:47,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15563 Valid, 7759 Invalid, 663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:20:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2024-11-23 23:20:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3736. [2024-11-23 23:20:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3734 states have (on average 1.4081414033208355) internal successors, (5258), 3735 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5258 transitions. [2024-11-23 23:20:47,704 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5258 transitions. Word has length 61 [2024-11-23 23:20:47,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:47,704 INFO L471 AbstractCegarLoop]: Abstraction has 3736 states and 5258 transitions. [2024-11-23 23:20:47,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5258 transitions. [2024-11-23 23:20:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:20:47,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:47,709 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:47,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:47,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:20:47,914 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:47,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2024-11-23 23:20:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965567084] [2024-11-23 23:20:47,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965567084] [2024-11-23 23:20:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965567084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414132325] [2024-11-23 23:20:48,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:48,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:48,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:48,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:20:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:48,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:20:48,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:49,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414132325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:50,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-11-23 23:20:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315499056] [2024-11-23 23:20:50,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:50,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 23:20:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:50,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 23:20:50,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:20:50,660 INFO L87 Difference]: Start difference. First operand 3736 states and 5258 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:53,322 INFO L93 Difference]: Finished difference Result 9187 states and 12165 transitions. [2024-11-23 23:20:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 23:20:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-23 23:20:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:53,360 INFO L225 Difference]: With dead ends: 9187 [2024-11-23 23:20:53,361 INFO L226 Difference]: Without dead ends: 7154 [2024-11-23 23:20:53,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=700, Invalid=2960, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 23:20:53,369 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 13893 mSDsluCounter, 9329 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13893 SdHoareTripleChecker+Valid, 10821 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:53,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13893 Valid, 10821 Invalid, 634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:20:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2024-11-23 23:20:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7112. [2024-11-23 23:20:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7112 states, 7110 states have (on average 1.3219409282700423) internal successors, (9399), 7111 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 9399 transitions. [2024-11-23 23:20:53,808 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 9399 transitions. Word has length 62 [2024-11-23 23:20:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:53,808 INFO L471 AbstractCegarLoop]: Abstraction has 7112 states and 9399 transitions. [2024-11-23 23:20:53,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 9399 transitions. [2024-11-23 23:20:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:20:53,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:53,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:53,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:20:54,014 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:54,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2024-11-23 23:20:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602126920] [2024-11-23 23:20:54,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602126920] [2024-11-23 23:20:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602126920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020361836] [2024-11-23 23:20:54,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:54,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:54,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:20:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:54,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:20:54,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:55,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:55,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020361836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:55,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:55,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-23 23:20:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733261531] [2024-11-23 23:20:55,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:55,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:20:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:55,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:20:55,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:20:55,825 INFO L87 Difference]: Start difference. First operand 7112 states and 9399 transitions. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:56,551 INFO L93 Difference]: Finished difference Result 12236 states and 15814 transitions. [2024-11-23 23:20:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:20:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-23 23:20:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:56,570 INFO L225 Difference]: With dead ends: 12236 [2024-11-23 23:20:56,570 INFO L226 Difference]: Without dead ends: 7356 [2024-11-23 23:20:56,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:20:56,577 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 7555 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7555 SdHoareTripleChecker+Valid, 6276 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:56,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7555 Valid, 6276 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:20:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7356 states. [2024-11-23 23:20:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7356 to 7236. [2024-11-23 23:20:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7234 states have (on average 1.309648880287531) internal successors, (9474), 7235 states have internal predecessors, (9474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9474 transitions. [2024-11-23 23:20:57,277 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9474 transitions. Word has length 62 [2024-11-23 23:20:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:57,278 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 9474 transitions. [2024-11-23 23:20:57,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9474 transitions. [2024-11-23 23:20:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:20:57,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:57,279 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:57,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:20:57,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:20:57,484 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:57,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash -753982150, now seen corresponding path program 1 times [2024-11-23 23:20:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:57,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819159738] [2024-11-23 23:20:57,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:57,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:59,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819159738] [2024-11-23 23:20:59,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819159738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840298599] [2024-11-23 23:20:59,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:59,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:59,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:59,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:59,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:20:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:59,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:20:59,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:21:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:00,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:21:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840298599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:21:01,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:21:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2024-11-23 23:21:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932284301] [2024-11-23 23:21:01,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:21:01,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 23:21:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:01,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 23:21:01,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1510, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:21:01,399 INFO L87 Difference]: Start difference. First operand 7236 states and 9474 transitions. Second operand has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:21:20,632 INFO L93 Difference]: Finished difference Result 14930 states and 18991 transitions. [2024-11-23 23:21:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-23 23:21:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 23:21:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:21:20,657 INFO L225 Difference]: With dead ends: 14930 [2024-11-23 23:21:20,657 INFO L226 Difference]: Without dead ends: 11835 [2024-11-23 23:21:20,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=4892, Invalid=17458, Unknown=0, NotChecked=0, Total=22350 [2024-11-23 23:21:20,665 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 19628 mSDsluCounter, 23939 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19628 SdHoareTripleChecker+Valid, 25547 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:21:20,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19628 Valid, 25547 Invalid, 1876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:21:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11835 states. [2024-11-23 23:21:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11835 to 7888. [2024-11-23 23:21:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7886 states have (on average 1.2983768704032463) internal successors, (10239), 7887 states have internal predecessors, (10239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10239 transitions. [2024-11-23 23:21:21,174 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10239 transitions. Word has length 63 [2024-11-23 23:21:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:21:21,179 INFO L471 AbstractCegarLoop]: Abstraction has 7888 states and 10239 transitions. [2024-11-23 23:21:21,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:21:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10239 transitions. [2024-11-23 23:21:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:21:21,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:21:21,180 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:21:21,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:21:21,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:21:21,384 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:21:21,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:21:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1905434029, now seen corresponding path program 1 times [2024-11-23 23:21:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:21:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86414939] [2024-11-23 23:21:21,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:21:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86414939] [2024-11-23 23:21:22,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86414939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:21:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291160144] [2024-11-23 23:21:22,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:22,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:21:22,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:21:22,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:21:22,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:21:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:22,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 23:21:22,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:21:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:26,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:21:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:21:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291160144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:21:30,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:21:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 18] total 59 [2024-11-23 23:21:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511357646] [2024-11-23 23:21:30,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:21:30,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-23 23:21:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:30,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-23 23:21:30,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3033, Unknown=0, NotChecked=0, Total=3422 [2024-11-23 23:21:30,900 INFO L87 Difference]: Start difference. First operand 7888 states and 10239 transitions. Second operand has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:07,523 INFO L93 Difference]: Finished difference Result 15330 states and 19423 transitions. [2024-11-23 23:22:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-23 23:22:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:22:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:07,550 INFO L225 Difference]: With dead ends: 15330 [2024-11-23 23:22:07,550 INFO L226 Difference]: Without dead ends: 12356 [2024-11-23 23:22:07,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8489 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=5221, Invalid=23171, Unknown=0, NotChecked=0, Total=28392 [2024-11-23 23:22:07,560 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33634 mSDsluCounter, 22496 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33634 SdHoareTripleChecker+Valid, 24041 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:07,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33634 Valid, 24041 Invalid, 2802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 23:22:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2024-11-23 23:22:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 9241. [2024-11-23 23:22:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.2855287368762853) internal successors, (11877), 9240 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 11877 transitions. [2024-11-23 23:22:08,492 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 11877 transitions. Word has length 64 [2024-11-23 23:22:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:08,493 INFO L471 AbstractCegarLoop]: Abstraction has 9241 states and 11877 transitions. [2024-11-23 23:22:08,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 11877 transitions. [2024-11-23 23:22:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:22:08,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:08,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:08,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:22:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:08,702 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:08,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-23 23:22:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:08,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072858216] [2024-11-23 23:22:08,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:09,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:09,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072858216] [2024-11-23 23:22:09,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072858216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:22:09,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711663721] [2024-11-23 23:22:09,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:09,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:22:09,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:22:09,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:22:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:09,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-23 23:22:09,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:22:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:13,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:22:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711663721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:22:18,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:22:18,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 23] total 53 [2024-11-23 23:22:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87286129] [2024-11-23 23:22:18,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:22:18,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-23 23:22:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:18,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-23 23:22:18,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=2320, Unknown=0, NotChecked=0, Total=2756 [2024-11-23 23:22:18,887 INFO L87 Difference]: Start difference. First operand 9241 states and 11877 transitions. Second operand has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:36,621 INFO L93 Difference]: Finished difference Result 15214 states and 19226 transitions. [2024-11-23 23:22:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-23 23:22:36,621 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:22:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:36,638 INFO L225 Difference]: With dead ends: 15214 [2024-11-23 23:22:36,638 INFO L226 Difference]: Without dead ends: 11498 [2024-11-23 23:22:36,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5206 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=3671, Invalid=13359, Unknown=0, NotChecked=0, Total=17030 [2024-11-23 23:22:36,644 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 21766 mSDsluCounter, 15842 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21766 SdHoareTripleChecker+Valid, 17383 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:36,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21766 Valid, 17383 Invalid, 1529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:22:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11498 states. [2024-11-23 23:22:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11498 to 7800. [2024-11-23 23:22:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7798 states have (on average 1.29738394460118) internal successors, (10117), 7799 states have internal predecessors, (10117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 10117 transitions. [2024-11-23 23:22:37,414 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 10117 transitions. Word has length 65 [2024-11-23 23:22:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:37,415 INFO L471 AbstractCegarLoop]: Abstraction has 7800 states and 10117 transitions. [2024-11-23 23:22:37,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:22:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 10117 transitions. [2024-11-23 23:22:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:22:37,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:37,416 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:37,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:22:37,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:37,621 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:37,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:37,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1854571664, now seen corresponding path program 1 times [2024-11-23 23:22:37,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:37,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394392700] [2024-11-23 23:22:37,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:37,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394392700] [2024-11-23 23:22:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394392700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:22:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909765851] [2024-11-23 23:22:39,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:39,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:39,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:22:39,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:22:39,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:22:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:39,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:22:39,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:22:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:41,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:22:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:43,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909765851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:22:43,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:22:43,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 16] total 48 [2024-11-23 23:22:43,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571857522] [2024-11-23 23:22:43,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:22:43,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-23 23:22:43,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:43,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-23 23:22:43,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:22:43,501 INFO L87 Difference]: Start difference. First operand 7800 states and 10117 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:05,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:05,687 INFO L93 Difference]: Finished difference Result 13265 states and 16833 transitions. [2024-11-23 23:23:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-23 23:23:05,692 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:23:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:05,706 INFO L225 Difference]: With dead ends: 13265 [2024-11-23 23:23:05,706 INFO L226 Difference]: Without dead ends: 11088 [2024-11-23 23:23:05,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4325 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=3009, Invalid=13247, Unknown=0, NotChecked=0, Total=16256 [2024-11-23 23:23:05,716 INFO L435 NwaCegarLoop]: 1556 mSDtfsCounter, 24763 mSDsluCounter, 28443 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24763 SdHoareTripleChecker+Valid, 29999 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:05,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24763 Valid, 29999 Invalid, 2651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 23:23:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2024-11-23 23:23:06,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 7662. [2024-11-23 23:23:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7662 states, 7660 states have (on average 1.2980417754569191) internal successors, (9943), 7661 states have internal predecessors, (9943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 9943 transitions. [2024-11-23 23:23:06,696 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 9943 transitions. Word has length 65 [2024-11-23 23:23:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:06,696 INFO L471 AbstractCegarLoop]: Abstraction has 7662 states and 9943 transitions. [2024-11-23 23:23:06,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:23:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 9943 transitions. [2024-11-23 23:23:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 23:23:06,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:06,698 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:06,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:23:06,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:23:06,899 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:06,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash -832715437, now seen corresponding path program 1 times [2024-11-23 23:23:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014005992] [2024-11-23 23:23:06,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014005992] [2024-11-23 23:23:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014005992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:23:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731001470] [2024-11-23 23:23:08,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:23:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:23:08,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:23:08,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:23:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:09,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 23:23:09,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:23:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:14,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:23:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731001470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:23:26,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:23:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 25] total 65 [2024-11-23 23:23:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168130297] [2024-11-23 23:23:26,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:23:26,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-23 23:23:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:23:26,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-23 23:23:26,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=3736, Unknown=0, NotChecked=0, Total=4160 [2024-11-23 23:23:26,409 INFO L87 Difference]: Start difference. First operand 7662 states and 9943 transitions. Second operand has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:45,541 INFO L93 Difference]: Finished difference Result 26288 states and 32736 transitions. [2024-11-23 23:24:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-23 23:24:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-23 23:24:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:45,628 INFO L225 Difference]: With dead ends: 26288 [2024-11-23 23:24:45,628 INFO L226 Difference]: Without dead ends: 20656 [2024-11-23 23:24:45,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13961 ImplicationChecksByTransitivity, 77.2s TimeCoverageRelationStatistics Valid=8490, Invalid=32112, Unknown=0, NotChecked=0, Total=40602 [2024-11-23 23:24:45,638 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 21931 mSDsluCounter, 27885 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21931 SdHoareTripleChecker+Valid, 29467 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:45,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21931 Valid, 29467 Invalid, 3817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-23 23:24:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20656 states. [2024-11-23 23:24:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20656 to 9120. [2024-11-23 23:24:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9120 states, 9118 states have (on average 1.2887694669883747) internal successors, (11751), 9119 states have internal predecessors, (11751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9120 states to 9120 states and 11751 transitions. [2024-11-23 23:24:46,966 INFO L78 Accepts]: Start accepts. Automaton has 9120 states and 11751 transitions. Word has length 66 [2024-11-23 23:24:46,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:46,967 INFO L471 AbstractCegarLoop]: Abstraction has 9120 states and 11751 transitions. [2024-11-23 23:24:46,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9120 states and 11751 transitions. [2024-11-23 23:24:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-23 23:24:46,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:46,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:46,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:24:47,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 23:24:47,170 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1600635228, now seen corresponding path program 1 times [2024-11-23 23:24:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941597320] [2024-11-23 23:24:47,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:47,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941597320] [2024-11-23 23:24:47,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941597320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:47,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:47,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:47,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219734956] [2024-11-23 23:24:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:47,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:47,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:47,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:47,265 INFO L87 Difference]: Start difference. First operand 9120 states and 11751 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:53,016 INFO L93 Difference]: Finished difference Result 12126 states and 16678 transitions. [2024-11-23 23:24:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:53,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-23 23:24:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:53,027 INFO L225 Difference]: With dead ends: 12126 [2024-11-23 23:24:53,027 INFO L226 Difference]: Without dead ends: 10622 [2024-11-23 23:24:53,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:53,030 INFO L435 NwaCegarLoop]: 1221 mSDtfsCounter, 753 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:53,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1301 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-23 23:24:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2024-11-23 23:24:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 10622. [2024-11-23 23:24:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10622 states, 10620 states have (on average 1.3095103578154426) internal successors, (13907), 10621 states have internal predecessors, (13907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10622 states to 10622 states and 13907 transitions. [2024-11-23 23:24:54,374 INFO L78 Accepts]: Start accepts. Automaton has 10622 states and 13907 transitions. Word has length 87 [2024-11-23 23:24:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:54,374 INFO L471 AbstractCegarLoop]: Abstraction has 10622 states and 13907 transitions. [2024-11-23 23:24:54,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:24:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10622 states and 13907 transitions. [2024-11-23 23:24:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:24:54,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:54,376 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:54,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:24:54,376 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:54,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1504683791, now seen corresponding path program 1 times [2024-11-23 23:24:54,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:54,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543501639] [2024-11-23 23:24:54,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:54,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543501639] [2024-11-23 23:24:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543501639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:54,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:24:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844771265] [2024-11-23 23:24:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:54,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:54,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:54,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:54,492 INFO L87 Difference]: Start difference. First operand 10622 states and 13907 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:00,589 INFO L93 Difference]: Finished difference Result 16634 states and 23147 transitions. [2024-11-23 23:25:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:25:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-23 23:25:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:00,603 INFO L225 Difference]: With dead ends: 16634 [2024-11-23 23:25:00,603 INFO L226 Difference]: Without dead ends: 13628 [2024-11-23 23:25:00,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:25:00,608 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 798 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:00,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 572 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 23:25:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2024-11-23 23:25:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 13626. [2024-11-23 23:25:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13626 states, 13624 states have (on average 1.283617146212566) internal successors, (17488), 13625 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13626 states to 13626 states and 17488 transitions. [2024-11-23 23:25:01,618 INFO L78 Accepts]: Start accepts. Automaton has 13626 states and 17488 transitions. Word has length 90 [2024-11-23 23:25:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:01,619 INFO L471 AbstractCegarLoop]: Abstraction has 13626 states and 17488 transitions. [2024-11-23 23:25:01,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 13626 states and 17488 transitions. [2024-11-23 23:25:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:25:01,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:01,620 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:01,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:25:01,620 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:01,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash -592058394, now seen corresponding path program 1 times [2024-11-23 23:25:01,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:01,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349510601] [2024-11-23 23:25:01,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:01,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:01,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:01,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349510601] [2024-11-23 23:25:01,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349510601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:25:01,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:25:01,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:25:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336151720] [2024-11-23 23:25:01,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:25:01,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:25:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:01,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:25:01,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:25:01,705 INFO L87 Difference]: Start difference. First operand 13626 states and 17488 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:07,908 INFO L93 Difference]: Finished difference Result 25646 states and 33890 transitions. [2024-11-23 23:25:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:25:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-23 23:25:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:07,929 INFO L225 Difference]: With dead ends: 25646 [2024-11-23 23:25:07,929 INFO L226 Difference]: Without dead ends: 19636 [2024-11-23 23:25:07,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:25:07,937 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 987 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:07,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 667 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-23 23:25:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2024-11-23 23:25:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 19634. [2024-11-23 23:25:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19634 states, 19632 states have (on average 1.2562143439282805) internal successors, (24662), 19633 states have internal predecessors, (24662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19634 states to 19634 states and 24662 transitions. [2024-11-23 23:25:09,319 INFO L78 Accepts]: Start accepts. Automaton has 19634 states and 24662 transitions. Word has length 91 [2024-11-23 23:25:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:09,319 INFO L471 AbstractCegarLoop]: Abstraction has 19634 states and 24662 transitions. [2024-11-23 23:25:09,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 19634 states and 24662 transitions. [2024-11-23 23:25:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:25:09,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:09,323 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:09,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:25:09,323 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:09,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1015323762, now seen corresponding path program 1 times [2024-11-23 23:25:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:09,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394999559] [2024-11-23 23:25:09,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394999559] [2024-11-23 23:25:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394999559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773240881] [2024-11-23 23:25:10,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:10,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:10,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:10,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:10,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:25:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:10,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:25:10,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:12,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773240881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:13,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 11] total 37 [2024-11-23 23:25:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768910816] [2024-11-23 23:25:13,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:13,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-23 23:25:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:13,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-23 23:25:13,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 23:25:13,749 INFO L87 Difference]: Start difference. First operand 19634 states and 24662 transitions. Second operand has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:28,397 INFO L93 Difference]: Finished difference Result 28653 states and 35685 transitions. [2024-11-23 23:25:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-23 23:25:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-23 23:25:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:28,430 INFO L225 Difference]: With dead ends: 28653 [2024-11-23 23:25:28,430 INFO L226 Difference]: Without dead ends: 21997 [2024-11-23 23:25:28,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=3657, Invalid=16935, Unknown=0, NotChecked=0, Total=20592 [2024-11-23 23:25:28,441 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 22089 mSDsluCounter, 20523 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22089 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:28,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22089 Valid, 22076 Invalid, 2049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:25:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21997 states. [2024-11-23 23:25:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21997 to 19553. [2024-11-23 23:25:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19553 states, 19551 states have (on average 1.2516495319932484) internal successors, (24471), 19552 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19553 states to 19553 states and 24471 transitions. [2024-11-23 23:25:29,534 INFO L78 Accepts]: Start accepts. Automaton has 19553 states and 24471 transitions. Word has length 104 [2024-11-23 23:25:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:29,534 INFO L471 AbstractCegarLoop]: Abstraction has 19553 states and 24471 transitions. [2024-11-23 23:25:29,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.945945945945946) internal successors, (294), 37 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:25:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 19553 states and 24471 transitions. [2024-11-23 23:25:29,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:25:29,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:29,537 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:25:29,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:25:29,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:25:29,738 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:29,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1992950965, now seen corresponding path program 1 times [2024-11-23 23:25:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435432483] [2024-11-23 23:25:29,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435432483] [2024-11-23 23:25:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435432483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924183507] [2024-11-23 23:25:30,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:30,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:30,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:30,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:30,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:25:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:31,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-23 23:25:31,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:33,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:38,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924183507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:38,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:38,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-11-23 23:25:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220868277] [2024-11-23 23:25:38,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:38,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-23 23:25:38,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:38,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-23 23:25:38,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2063, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:25:38,639 INFO L87 Difference]: Start difference. First operand 19553 states and 24471 transitions. Second operand has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:26:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:02,893 INFO L93 Difference]: Finished difference Result 30579 states and 37861 transitions. [2024-11-23 23:26:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-23 23:26:02,898 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 23:26:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:02,926 INFO L225 Difference]: With dead ends: 30579 [2024-11-23 23:26:02,926 INFO L226 Difference]: Without dead ends: 25390 [2024-11-23 23:26:02,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6977 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=4168, Invalid=19088, Unknown=0, NotChecked=0, Total=23256 [2024-11-23 23:26:02,934 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 29557 mSDsluCounter, 20756 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29557 SdHoareTripleChecker+Valid, 22320 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:02,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29557 Valid, 22320 Invalid, 2176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:26:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25390 states. [2024-11-23 23:26:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25390 to 20910. [2024-11-23 23:26:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20910 states, 20908 states have (on average 1.2416299980868568) internal successors, (25960), 20909 states have internal predecessors, (25960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:26:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20910 states to 20910 states and 25960 transitions. [2024-11-23 23:26:04,407 INFO L78 Accepts]: Start accepts. Automaton has 20910 states and 25960 transitions. Word has length 105 [2024-11-23 23:26:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:04,407 INFO L471 AbstractCegarLoop]: Abstraction has 20910 states and 25960 transitions. [2024-11-23 23:26:04,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.0625) internal successors, (291), 48 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:26:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20910 states and 25960 transitions. [2024-11-23 23:26:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:26:04,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:04,410 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:26:04,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:26:04,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:26:04,610 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:04,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-23 23:26:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614815076] [2024-11-23 23:26:04,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:26:05,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614815076] [2024-11-23 23:26:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614815076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:26:05,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692045536] [2024-11-23 23:26:05,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:05,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:26:05,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:26:05,983 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:26:05,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:26:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:06,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-23 23:26:06,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:26:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:26:10,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:26:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:26:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692045536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:26:18,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:26:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 69 [2024-11-23 23:26:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607899971] [2024-11-23 23:26:18,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:26:18,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-23 23:26:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:18,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-23 23:26:18,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=4257, Unknown=0, NotChecked=0, Total=4692 [2024-11-23 23:26:18,612 INFO L87 Difference]: Start difference. First operand 20910 states and 25960 transitions. Second operand has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:15,421 INFO L93 Difference]: Finished difference Result 31983 states and 39192 transitions. [2024-11-23 23:29:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2024-11-23 23:29:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 23:29:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:15,444 INFO L225 Difference]: With dead ends: 31983 [2024-11-23 23:29:15,444 INFO L226 Difference]: Without dead ends: 29073 [2024-11-23 23:29:15,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49547 ImplicationChecksByTransitivity, 171.3s TimeCoverageRelationStatistics Valid=14249, Invalid=117157, Unknown=0, NotChecked=0, Total=131406 [2024-11-23 23:29:15,453 INFO L435 NwaCegarLoop]: 1682 mSDtfsCounter, 23735 mSDsluCounter, 50055 mSDsCounter, 0 mSdLazyCounter, 6083 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23735 SdHoareTripleChecker+Valid, 51737 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 6083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:15,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23735 Valid, 51737 Invalid, 6344 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 6083 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-23 23:29:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29073 states. [2024-11-23 23:29:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29073 to 26314. [2024-11-23 23:29:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26314 states, 26312 states have (on average 1.231795378534509) internal successors, (32411), 26313 states have internal predecessors, (32411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26314 states to 26314 states and 32411 transitions. [2024-11-23 23:29:17,761 INFO L78 Accepts]: Start accepts. Automaton has 26314 states and 32411 transitions. Word has length 105 [2024-11-23 23:29:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:17,762 INFO L471 AbstractCegarLoop]: Abstraction has 26314 states and 32411 transitions. [2024-11-23 23:29:17,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.217391304347826) internal successors, (291), 69 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 26314 states and 32411 transitions. [2024-11-23 23:29:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:29:17,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:17,764 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:17,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:29:17,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:29:17,965 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:17,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -432087399, now seen corresponding path program 1 times [2024-11-23 23:29:17,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:17,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598751207] [2024-11-23 23:29:17,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:19,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598751207] [2024-11-23 23:29:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598751207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487152881] [2024-11-23 23:29:19,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:19,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:19,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:19,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:19,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:29:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:19,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-23 23:29:19,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:23,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487152881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:29:30,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:29:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 23] total 64 [2024-11-23 23:29:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780796985] [2024-11-23 23:29:30,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:29:30,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 23:29:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:30,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 23:29:30,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3629, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 23:29:30,764 INFO L87 Difference]: Start difference. First operand 26314 states and 32411 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:48,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:48,027 INFO L93 Difference]: Finished difference Result 44389 states and 53967 transitions. [2024-11-23 23:30:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2024-11-23 23:30:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-23 23:30:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:48,060 INFO L225 Difference]: With dead ends: 44389 [2024-11-23 23:30:48,060 INFO L226 Difference]: Without dead ends: 38282 [2024-11-23 23:30:48,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29407 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=10652, Invalid=72004, Unknown=0, NotChecked=0, Total=82656 [2024-11-23 23:30:48,069 INFO L435 NwaCegarLoop]: 1664 mSDtfsCounter, 29311 mSDsluCounter, 38309 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29311 SdHoareTripleChecker+Valid, 39973 SdHoareTripleChecker+Invalid, 4789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:48,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29311 Valid, 39973 Invalid, 4789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-23 23:30:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38282 states. [2024-11-23 23:30:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38282 to 30703. [2024-11-23 23:30:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30703 states, 30701 states have (on average 1.2251718185075404) internal successors, (37614), 30702 states have internal predecessors, (37614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30703 states to 30703 states and 37614 transitions. [2024-11-23 23:30:51,298 INFO L78 Accepts]: Start accepts. Automaton has 30703 states and 37614 transitions. Word has length 105 [2024-11-23 23:30:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:51,298 INFO L471 AbstractCegarLoop]: Abstraction has 30703 states and 37614 transitions. [2024-11-23 23:30:51,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 30703 states and 37614 transitions. [2024-11-23 23:30:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:30:51,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:51,300 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:51,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:30:51,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:51,501 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 57555632, now seen corresponding path program 1 times [2024-11-23 23:30:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575017017] [2024-11-23 23:30:51,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:53,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575017017] [2024-11-23 23:30:53,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575017017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:53,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895449531] [2024-11-23 23:30:53,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:53,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:53,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:53,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:30:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:53,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 23:30:53,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:57,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895449531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:05,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 26] total 71 [2024-11-23 23:31:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578555311] [2024-11-23 23:31:05,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:05,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-23 23:31:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:05,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-23 23:31:05,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=4457, Unknown=0, NotChecked=0, Total=4970 [2024-11-23 23:31:05,206 INFO L87 Difference]: Start difference. First operand 30703 states and 37614 transitions. Second operand has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:43,927 INFO L93 Difference]: Finished difference Result 38701 states and 47131 transitions. [2024-11-23 23:31:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-23 23:31:43,928 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-23 23:31:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:43,955 INFO L225 Difference]: With dead ends: 38701 [2024-11-23 23:31:43,955 INFO L226 Difference]: Without dead ends: 34490 [2024-11-23 23:31:43,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12054 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=6081, Invalid=33321, Unknown=0, NotChecked=0, Total=39402 [2024-11-23 23:31:43,962 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 27016 mSDsluCounter, 31666 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27016 SdHoareTripleChecker+Valid, 33253 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:43,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27016 Valid, 33253 Invalid, 2843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:31:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34490 states. [2024-11-23 23:31:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34490 to 32642. [2024-11-23 23:31:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32642 states, 32640 states have (on average 1.2236213235294118) internal successors, (39939), 32641 states have internal predecessors, (39939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32642 states to 32642 states and 39939 transitions. [2024-11-23 23:31:47,552 INFO L78 Accepts]: Start accepts. Automaton has 32642 states and 39939 transitions. Word has length 106 [2024-11-23 23:31:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:47,552 INFO L471 AbstractCegarLoop]: Abstraction has 32642 states and 39939 transitions. [2024-11-23 23:31:47,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.211267605633803) internal successors, (299), 71 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 32642 states and 39939 transitions. [2024-11-23 23:31:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:31:47,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:47,554 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:47,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:31:47,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:47,755 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:47,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-23 23:31:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:47,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809529121] [2024-11-23 23:31:47,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:49,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809529121] [2024-11-23 23:31:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809529121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384624260] [2024-11-23 23:31:49,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:49,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:49,764 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:49,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:31:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:49,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:31:49,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:52,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:55,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384624260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:55,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:55,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 17] total 54 [2024-11-23 23:31:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815485731] [2024-11-23 23:31:55,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:55,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-23 23:31:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:55,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-23 23:31:55,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2024-11-23 23:31:55,843 INFO L87 Difference]: Start difference. First operand 32642 states and 39939 transitions. Second operand has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:26,925 INFO L93 Difference]: Finished difference Result 54569 states and 66245 transitions. [2024-11-23 23:32:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-23 23:32:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-23 23:32:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:26,975 INFO L225 Difference]: With dead ends: 54569 [2024-11-23 23:32:26,976 INFO L226 Difference]: Without dead ends: 40936 [2024-11-23 23:32:26,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13610 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=5654, Invalid=34546, Unknown=0, NotChecked=0, Total=40200 [2024-11-23 23:32:26,992 INFO L435 NwaCegarLoop]: 1632 mSDtfsCounter, 38900 mSDsluCounter, 26602 mSDsCounter, 0 mSdLazyCounter, 3991 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38900 SdHoareTripleChecker+Valid, 28234 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:26,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38900 Valid, 28234 Invalid, 4147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 3991 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:32:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40936 states. [2024-11-23 23:32:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40936 to 35818. [2024-11-23 23:32:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35818 states, 35816 states have (on average 1.2235593031047576) internal successors, (43823), 35817 states have internal predecessors, (43823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35818 states to 35818 states and 43823 transitions. [2024-11-23 23:32:31,266 INFO L78 Accepts]: Start accepts. Automaton has 35818 states and 43823 transitions. Word has length 107 [2024-11-23 23:32:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:31,266 INFO L471 AbstractCegarLoop]: Abstraction has 35818 states and 43823 transitions. [2024-11-23 23:32:31,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 35818 states and 43823 transitions. [2024-11-23 23:32:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:32:31,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:31,268 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:32:31,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:32:31,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:31,469 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:31,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-23 23:32:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512646417] [2024-11-23 23:32:31,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:33,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:33,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512646417] [2024-11-23 23:32:33,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512646417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:33,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199438096] [2024-11-23 23:32:33,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:33,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:33,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:33,773 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:33,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377ee530-75b2-4323-a4f3-853bf81e7340/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:32:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:34,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-23 23:32:34,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:38,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199438096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:51,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 28] total 79 [2024-11-23 23:32:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892266632] [2024-11-23 23:32:51,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:51,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-23 23:32:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:51,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-23 23:32:51,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=5577, Unknown=0, NotChecked=0, Total=6162 [2024-11-23 23:32:51,951 INFO L87 Difference]: Start difference. First operand 35818 states and 43823 transitions. Second operand has 79 states, 79 states have (on average 3.7974683544303796) internal successors, (300), 79 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)